<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>

<body>
    <div id="app">
        <!-- 
            v-for 列表渲染（循环节点操作）
            语法格式:  v-for="(元素,索引) in  需要循环的变量"

            key:"xxxx"
         -->
        <!-- 循环一维数组 -->
        <ul>
            <li v-for="(item,index) in arr">
                {{ index }}=={{ item }}
            </li>
        </ul>
        <ul>
            <li v-for="val in  arr">
                {{ val }}
            </li>
        </ul>

        <!-- 循环对象数组 -->
        <ul>
            <li v-for="(item,index) in brr">
                {{ index }}--{{ item.name }}--{{ item.age }}
            </li>
        </ul>

        <!-- 循环对象  item 元素  key  键   ind是索引 -->
        <ul>
            <li v-for="(item,key,ind) in obj">
                {{ ind }} --{{ key }}--{{ item }}
            </li>
        </ul>
    </div>
    <script>
        new Vue({
            el: "#app",
            data: {
                arr: ["刘备", "关羽", "张飞"],
                brr: [
                    { id: 1, name: "狗蛋", age: 20 },
                    { id: 1, name: "翠花", age: 21 },
                    { id: 1, name: "旺财", age: 20 }
                ],
                obj: {
                    id: 1, name: "来福", age: 20
                }
            }
        })
    </script>
</body>

</html>